Sign in before asking the tutor.
Guest browsing can read public lessons, but AI Tutor chat belongs to a learner account. Sign in with Google to use the Free quota. Premium and Pro receive the same backend-authorized limits and model upgrades used by Android.
Public lessons remain open. Chat is locked until sign-in.
Monthly learning-focused chats with backend guardrails.
No ads and wider tutor quota when entitlement is active.
Highest configured model and quota when Pro is active.